using LifePayment.Application.Contracts;
using LifePayment.Domain.LifePay;
using LifePayment.Domain.Models;
using LifePayment.Domain.Shared;
using LifePayment.Domain;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Volo.Abp.Application.Services;
using Volo.Abp.Data;
using Volo.Abp.Domain.Repositories;
using Volo.Abp.EventBus.Distributed;
using static Nest.FileSystemStats;
using Microsoft.EntityFrameworkCore;

namespace LifePayment.Application.LifePay
{
    public class StatisticsService : ApplicationService, IStatisticsService
    {
        private readonly IRepository<LifePayOrder, Guid> _lifePayOrderRepository;
        private readonly IRepository<LifePayUser, Guid> _lifePayUserRepository;
        private readonly IRepository<DallyStatistics, Guid> _dallyStatisticsRepository;

        public StatisticsService(
                              IRepository<LifePayOrder, Guid> lifePayOrderRepository,
                              IRepository<LifePayUser, Guid> lifePayUserRepository,
                            IRepository<DallyStatistics, Guid> dallyStatisticsRepository)
        {
            _lifePayOrderRepository = lifePayOrderRepository;
            _lifePayUserRepository = lifePayUserRepository;
            _dallyStatisticsRepository = dallyStatisticsRepository;
        }

        public async Task<TopStatisticsOutput> GetTopStatistics()
        {
            var today = DateTime.Now.Date;
            var statistics = await _dallyStatisticsRepository.Where(x => x.CreationTime.Date == today).FirstOrDefaultAsync();
            if (statistics == null)
            {
                /// 累计收款：统计平台账户下订单创建时间在昨天及之前收到的【用户支付成功的金额-退款给用户的金额】；
                var accumulatedReceipts = await _lifePayOrderRepository.Where(x => x.CreationTime < today && x.PayStatus != LifePayStatusEnum.未支付).SumAsync(x => x.PayAmount) - await _lifePayOrderRepository.Where(x => x.CreationTime < today && x.LifePayRefundStatus == LifePayRefundStatusEnum.已退款).SumAsync(x => (x.RefundPrice ?? 0));
                /// 昨日收款：统计平台账户下订单创建时间在昨天收到的【用户支付成功的金额-退款给用户的金额】；
                var receiptsYesterday = await _lifePayOrderRepository.Where(x => x.CreationTime >= today.AddDays(-1) && x.CreationTime < today && x.PayStatus == LifePayStatusEnum.已支付).SumAsync(x => x.PayAmount) - await _lifePayOrderRepository.Where(x => x.CreationTime >= today.AddDays(-1) && x.CreationTime < today && x.LifePayRefundStatus == LifePayRefundStatusEnum.已退款).SumAsync(x => x.PayAmount);
                /// 累计收入：统计平台账户下订单状态为“已完成”且订单创建时间在昨天及之前收到的【用户实付金额-平台扣款金额-部分退款金额】；
                var accumulatedIncome = await _lifePayOrderRepository.Where(x => x.CreationTime < today && x.LifePayOrderStatus == LifePayOrderStatusEnum.已完成).SumAsync(x => x.PayAmount - (x.PlatformDeductionAmount ?? 0) - (x.RefundPrice ?? 0));
                /// 累计下单：统计平台中订单下单时间在昨天及之前时间的订单记录；
                var accumulatedOrders = await _lifePayOrderRepository.Where(x => x.CreationTime < today).CountAsync();
                /// 昨日下单：统计平台中订单下单时间在昨天的订单记录；
                var ordersNumYesterday = await _lifePayOrderRepository.Where(x => x.CreationTime >= today.AddDays(-1) && x.CreationTime < today).CountAsync();
                /// 昨日成功：统计平台中订单状态为“已完成/部分充值成功”且订单下单时间在昨天的订单记录；
                var yesterdaySuccess = await _lifePayOrderRepository.Where(x => x.CreationTime >= today.AddDays(-1) && x.CreationTime < today && x.LifePayOrderStatus == LifePayOrderStatusEnum.已完成).CountAsync();
                /// 昨日失败：统计平台中订单状态为“充值失败/已退款”且订单下单时间在昨天的订单记录；
                var yesterdayFail = await _lifePayOrderRepository.Where(x => x.CreationTime >= today.AddDays(-1) && x.CreationTime < today && x.LifePayOrderStatus == LifePayOrderStatusEnum.已退款).CountAsync();
                /// 累计用户
                var accumulatedUsers = await _lifePayUserRepository.CountAsync();
                /// 昨日活跃用户
                var yesterdayActiveUsers = await _lifePayUserRepository.Where(x => x.LastLoginTime >= today.AddDays(-1)).CountAsync();

                var entity = new DallyStatistics()
                {
                    Id = GuidGenerator.Create(),
                    CreationTime = DateTime.Now,
                    Amount = 0,
                    AccumulatedReceipts = accumulatedReceipts,
                    AccumulatedIncome = accumulatedIncome,
                    ReceiptsYesterday = receiptsYesterday,
                    AccumulatedOrders = accumulatedOrders,
                    OrdersNumYesterday = ordersNumYesterday,
                    YesterdaySuccess = yesterdaySuccess,
                    YesterdayFail = yesterdayFail,
                    AccumulatedUsers = accumulatedUsers,
                    YesterdayActiveUsers = yesterdayActiveUsers
                };
                await _dallyStatisticsRepository.InsertAsync(entity);

                TopStatisticsOutput topStatisticsOutput = new TopStatisticsOutput()
                {
                    Amount = entity.Amount,
                    AccumulatedReceipts = entity.AccumulatedReceipts,
                    AccumulatedIncome = entity.AccumulatedIncome,
                    ReceiptsYesterday = entity.ReceiptsYesterday,
                    AccumulatedOrders = entity.AccumulatedOrders,
                    OrdersNumYesterday = entity.OrdersNumYesterday,
                    YesterdaySuccess = entity.YesterdaySuccess,
                    YesterdayFail = entity.YesterdayFail,
                    AccumulatedUsers = entity.AccumulatedUsers,
                    YesterdayActiveUsers = entity.YesterdayActiveUsers,
                };
                return topStatisticsOutput;
            }
            else
            {
                TopStatisticsOutput topStatisticsOutput = new TopStatisticsOutput()
                {
                    Amount = statistics.Amount,
                    AccumulatedReceipts = statistics.AccumulatedReceipts,
                    AccumulatedIncome = statistics.AccumulatedIncome,
                    ReceiptsYesterday = statistics.ReceiptsYesterday,
                    AccumulatedOrders = statistics.AccumulatedOrders,
                    OrdersNumYesterday = statistics.OrdersNumYesterday,
                    YesterdaySuccess = statistics.YesterdaySuccess,
                    YesterdayFail = statistics.YesterdayFail,
                    AccumulatedUsers = statistics.AccumulatedUsers,
                    YesterdayActiveUsers = statistics.YesterdayActiveUsers,
                };
                return topStatisticsOutput;
            }
        }
    }
}